Does fasting reduce belly fat? (2024)

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Belly fat, also known as visceral fat, is not only unsightly, but also leads to many health risks, such as diabetes, heart disease or obesity. Many people choose intermittent fasting to reduce their excess belly fat. However, does this eating pattern really work as expected?

1. Some facts about belly fat

Most of us have a certain amount of belly fat, even those with flat abs. However, having too much belly fat affects your health in different ways.
Some fat is located just under your skin, others may be deeper inside or around your heart, liver, lungs and other organs. The deeper fats, called visceral fat, act as a cushion, helping to support the organs in the body.
In fact, our body only needs a small amount of visceral fat. Too much of this fat can lead to dangerous conditions like high blood pressure, heart disease, type 2 diabetes, dementia, colon and breast cancer.
When your weight increases beyond the allowable limit, the body will start to store fat in certain areas, especially the organs around the heart. Even in thin people, they can still store a lot of visceral fat. The amount of excess fat you have will depend on factors such as your genes, lifestyle, and physical activity level.
Visceral fat tends to occur more in people who do not exercise regularly or have an unhealthy diet. Therefore, whether you are thin or overweight, it is important to participate in sports activities every day to avoid storing belly fat or other unhealthy fats in the body.

2. How do you know how much belly fat you have?

The most accurate way to help you determine how much belly fat or visceral fat you have is a CT or MRI scan. In addition to the above methods, you can also check your belly fat at home through a tape measure.
You can take a measuring tape, then wrap it around your waist and check your waist circumference. For the most accurate results, you should stand upright when measuring. For women, the ideal waist size is under 35 inches and less than 40 inches if you're a man.

Does fasting reduce belly fat? (1)

3. Does fasting reduce belly fat?

Intermittent fasting for weight loss is becoming a popular weight loss method in recent years. When applying this eating pattern, you will still eat normally on some days of the week and only spend a few days to significantly reduce your calorie consumption.
Some studies show that intermittent fasting has short-term effects. People who followed this diet were able to lose weight, belly fat as well as markers of inflammation.
When you fast, the body's cells are under mild stress. On days when you consume less calories will help cells strengthen their ability to cope with stress and fight some diseases.
Does fasting reduce belly fat? Within 12 hours of not eating, the body will begin to change to save energy and work more efficiently. The empty stores of glucose or sugar burn fat and create chemical byproducts, called ketones. This substance will circulate throughout the body, helping to improve insulin sensitivity, nourish the brain and reduce inflammation. In addition, blood levels of sodium and the compound TMAO (which is linked to heart disease) also plummeted, while a red blood cell count increased, which promotes heart health.
Furthermore, brain-derived neurotrophic factor (BDNF), a protein essential for the healthy maintenance of nerve cells, spiked. Meanwhile, cells switch from an active to a resting state, repairing and cleaning up faulty mitochondria (the cell's energy-producing furnace) and reducing oxidative stress (the cell damage that causes cell damage). aging tissue).
When we eat again, the cells have adapted and better use fats, proteins and carbs. Nutrition experts say that switching back and forth between fasting and eating again can bring many health benefits, including weight loss, reducing belly fat. However, to lose belly fat and get the nutrients you need, you should eat healthy, limiting sugary desserts and processed foods.

4. Some risks of fasting to reduce belly fat

A lot of people use fasting to reduce belly fat, but sometimes it can unintentionally become a habit of binge eating and fasting.
For people with diabetes or those on blood sugar control medications, fasting can cause blood sugar to drop to dangerous levels. And for people who are thin or elderly, fasting can lead to bone and muscle loss.
Ideally, if you have any health conditions, you need to consult a nutritionist before trying to apply the method of intermittent fasting to lose weight.

5. Ways to help "break" belly fat effectively

Belly fat or visceral fat is considered the main cause of increased risk of heart disease, type 2 diabetes and a number of other diseases. Instead of following a weight loss intermittent fasting diet, you can still significantly lose your excess belly fat through the following lifestyle and dietary changes:

5.1. Add more soluble fiber

Soluble fiber absorbs water and forms a gel-like mixture, which slows down the digestion of food in the body. Studies have shown that this type of fiber helps promote weight loss by making you feel fuller faster, thereby curbing cravings naturally. In addition, it also helps reduce the number of calories that your body absorbs from food.
In particular, soluble fiber has the ability to fight belly fat. Results of a study in more than 1,100 adults showed that every 10 gram increase in soluble fiber resulted in a 3.7% reduction in belly fat over a five-year period. Therefore, you should try to add more soluble fiber-rich foods to your daily diet, including:
Blackberries Flaxseed Legumes Brussels sprouts Avocado noodles (Shirataki noodles)

Does fasting reduce belly fat? (2)

5.2. Avoid consuming foods containing trans fats

Trans fats are commonly found in some margarine and packaged foods. Consuming a lot of these fats can lead to inflammation, heart disease, increased belly fat, and insulin resistance. An animal experiment showed that adopting a diet rich in trans fats resulted in a 33% increase in belly fat.
To help reduce belly fat and protect your health, you should read nutrition labels carefully and stay away from foods containing trans fats. They are often listed on product labels as partially hydrogenated fats.

5.3. Don't drink too much alcohol

Drinking too much alcohol can make you gain belly fat. Therefore, when limiting alcohol consumption will help you significantly reduce your waist size.

Does fasting reduce belly fat? (3)

5.4. Eat a high protein diet

Protein is an extremely important nutrient, helping you manage your weight.
When consuming a lot of protein will increase the level of the hormone PYY, which helps reduce appetite and promote feelings of fullness. In addition, protein also increases the body's metabolic rate and maintains muscle mass during weight loss.
Many studies have shown that people who eat a lot of protein tend to have less belly fat than people with a low protein diet. Here are some protein-rich foods that you should choose, including:
Dairy products Meat Fish Eggs Beans Whey protein

5.5. Control stress levels

Stress can increase belly fat by stimulating the adrenal glands to produce the stress hormone cortisol. Experts believe that high levels of cortisol will increase appetite and promote the accumulation of excess fat in the abdomen.
On the other hand, women who already have large waistlines tend to produce more of the hormone cortisol in response to stress. To help lose belly fat effectively, you should engage in enjoyable activities that help manage and manage your stress.

5.6. Do exercise

Vigorous exercise will help you get rid of excess body fat, including visceral fat. Experts recommend that you do moderate exercise, at least 30 minutes a day and do it about 5 days a week.
Some exercises to reduce belly fat that you should apply, such as brisk walking, jogging or cycling. These activities make your heart beat faster, sweat more, thereby helping to burn visceral fat and improve physique extremely effectively.

5.7. Sleep well and get enough sleep

Sleep is especially important for many aspects of a person's health, including weight control. Studies show that people who don't get enough sleep or sleep less than 7 hours a night tend to gain more weight and belly fat than people with good sleep quality.
In addition, sleep apnea can also increase the risk of storing excess visceral fat in the body. This is a sleep disorder that can seriously affect your health if not treated early.

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References: healthline.com, webmd.com

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This article is written for readers from Sài Gòn, Hà Nội, Hồ Chí Minh, Phú Quốc, Nha Trang, Hạ Long, Hải Phòng, Đà Nẵng.

Does fasting reduce belly fat? (2024)

FAQs

Does fasting reduce belly fat? ›

Can intermittent fasting alone improve visceral fat loss? Unfortunately, no. While you do lose weight when you consume fewer calories than you burn, losing fat, especially visceral fat, requires a combination of diet and exercise, particularly muscle-strengthening exercises.

Can you lose belly fat by just fasting? ›

Fasting is a powerful tool for targeting and reducing belly fat. It works by shifting your body's metabolism from burning sugar to burning fat as its primary source of energy. This metabolic shift is what leads to fat loss, particularly in the abdominal area.

How long should I fast to get a flat belly? ›

Two popular intermittent fasting approaches include doing a 24-hour fast two to four times per week or a 16/8 fast, where you restrict your eating window to 8 hours each day, often by skipping breakfast or eating an early dinner.

How many days of fasting does it take to lose fat? ›

Fasting did seem to spur noticeable short-term weight loss, the researchers found. People who fasted for five days lost about 4% to 6% of their weight; those who fasted for seven to 10 days lost about 2% to 10%, and those who fasted for 15 to 20 days lost 7% to 10%.

Can you shrink your stomach by fasting? ›

Your stomach is constantly expanding and shrinking to accommodate your food. You can't consistently change its physical size by eating differently or in really small amounts. For example, not eating won't cause your stomach to shrink over time. And eating small amounts of food won't “shrink your stomach” either.

When does fat burning start during fasting? ›

Keto is short for ketosis, the metabolic process that kicks in when your body runs out of glucose (its preferred energy source) and starts burning stored fat. Your body may go into ketosis after just 12 hours of not eating, which many people do overnight before they "break fast" with a morning meal.

What burns the most belly fat? ›

Aerobic exercise includes any activity that raises your heart rate such as walking, dancing, running or swimming. This can also include doing housework, gardening and playing with your children. Other types of exercise such as strength training, Pilates and yoga can also help you lose belly fat.

How fast can you realistically lose belly fat? ›

So if you lose 1lb (0.45kg) a week you could hope to reduce your waistline by an inch after four weeks. Dieticians advise that if you eat 500 calories less than your daily requirement you will lose about 1lb every seven days (expect some variation from person to person).

Will I lose belly fat if I stop eating? ›

Can intermittent fasting alone improve visceral fat loss? Unfortunately, no. While you do lose weight when you consume fewer calories than you burn, losing fat, especially visceral fat, requires a combination of diet and exercise, particularly muscle-strengthening exercises.

Why is my stomach getting bigger while fasting? ›

It was found that when in a fasted state, the belly fat adapted to protect its energy stores. During fasting, the fat tissues provide energy to the rest of the body by realising fatty acid molecules. However, the belly fat became resistant to this release of fatty acids during fasting.

How to get a flat tummy? ›

Some exercises that can help include planks, bicycle crunches, and burpees. Other techniques for reducing belly fat include reducing the calorie intake, staying hydrated, and improving sleep hygiene. Many factors can affect how long desired weight loss takes.

What is the quickest exercise to lose belly fat? ›

Some great cardio of aerobic exercises for belly fat include:
  • Walking, especially at a quick pace.
  • Running.
  • Biking.
  • Rowing.
  • Swimming.
  • Cycling.
  • Group fitness classes.
Apr 25, 2023

Will fasting shrink belly fat? ›

Nutrition experts say that switching back and forth between fasting and eating again can bring many health benefits, including weight loss, reducing belly fat. However, to lose belly fat and get the nutrients you need, you should eat healthy, limiting sugary desserts and processed foods.

What is the best fasting time for fat loss? ›

The rules for this diet are simple. A person needs to decide on and adhere to a 12-hour fasting window every day. According to some researchers, fasting for 10–16 hours can cause the body to turn its fat stores into energy, which releases ketones into the bloodstream. This should encourage weight loss.

How to lose 10 pounds in a week? ›

To lose 10 pounds in one week, you'll need to burn between 3,500 and 5,000 calories more than you consume each day by restricting your diet to small portions of nutritious yet low-calorie foods, and significantly increasing your aerobic exercise with interval training, sports, and other vigorous activities.

Can you burn fat just by fasting? ›

Recent research has found that using intermittent fasting for weight loss may have some benefits in the short term. It appears that fasting for a short time can produce ketosis, which is a process that occurs when the body doesn't have enough glucose for energy, so it breaks down stored fat instead.

What time should you stop eating to lose belly fat? ›

There's no set time you should stop eating to lose belly fat, but, as a guideline, you should avoid eating two to three hours before bed to stop it from disrupting your sleep and body clocks, which can cause belly fat gain. Studies show early dinners can help people lose weight.

How to reduce belly fat in 7 days? ›

To lose belly fat in one week, you can employ strategies such as running for 25 minutes every day and following a healthy diet. A diet that is low in calories, fats, and sugars will allow the body to burn fat more easily.

What does 24 hour fasting do to your body? ›

If a person fasts for 24 hours, the body runs out of its stored energy source, known as glycogen. Fat and protein are then used as an energy source. Effects on the body include weight loss, preventing certain diseases, and improving cardiovascular health.

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